code re-org have slightly less pub(crate) items
This commit is contained in:
kyren
parent
30a94c4dec
commit
703601e348
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@ -51,7 +51,6 @@ mod macros;
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mod conversion;
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mod function;
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mod lua;
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mod methods;
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mod multi;
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mod scope;
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mod string;
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@ -68,14 +67,13 @@ mod tests;
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pub use error::{Error, ExternalError, ExternalResult, Result};
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pub use function::Function;
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pub use lua::Lua;
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pub use methods::{MetaMethod, UserDataMethods};
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pub use multi::Variadic;
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pub use scope::Scope;
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pub use string::String;
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pub use table::{Table, TablePairs, TableSequence};
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pub use thread::{Thread, ThreadStatus};
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pub use types::{Integer, LightUserData, Number, RegistryKey};
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pub use userdata::{AnyUserData, UserData};
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pub use userdata::{AnyUserData, MetaMethod, UserData, UserDataMethods};
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pub use value::{FromLua, FromLuaMulti, MultiValue, Nil, ToLua, ToLuaMulti, Value};
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pub mod prelude;
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173
src/lua.rs
173
src/lua.rs
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@ -4,6 +4,7 @@ use std::collections::HashMap;
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use std::ffi::CString;
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use std::marker::PhantomData;
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use std::os::raw::{c_char, c_int, c_void};
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use std::string::String as StdString;
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use std::sync::{Arc, Mutex};
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use std::{mem, ptr, str};
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@ -12,13 +13,12 @@ use libc;
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use error::{Error, Result};
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use ffi;
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use function::Function;
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use methods::{meta_method_name, StaticUserDataMethods};
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use scope::Scope;
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use string::String;
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use table::Table;
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use thread::Thread;
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use types::{Callback, Integer, LightUserData, LuaRef, Number, RegistryKey};
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use userdata::{AnyUserData, UserData};
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use userdata::{AnyUserData, MetaMethod, UserData, UserDataMethods};
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use util::{
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assert_stack, callback_error, check_stack, gc_guard, get_userdata, get_wrapped_error,
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init_error_metatables, init_userdata_metatable, main_state, pop_error, protect_lua,
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@ -788,7 +788,7 @@ impl Lua {
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ffi::lua_newtable(state);
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})?;
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for (k, m) in methods.meta_methods {
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push_string(self.state, meta_method_name(k))?;
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push_string(self.state, k.name())?;
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self.push_value(Value::Function(self.create_callback(m)?));
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protect_lua_closure(self.state, 3, 1, |state| {
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@ -1061,3 +1061,170 @@ unsafe fn ref_stack_pop(extra: *mut ExtraData) -> c_int {
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}
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static FUNCTION_METATABLE_REGISTRY_KEY: u8 = 0;
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struct StaticUserDataMethods<'lua, T: 'static + UserData> {
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methods: HashMap<StdString, Callback<'lua, 'static>>,
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meta_methods: HashMap<MetaMethod, Callback<'lua, 'static>>,
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_type: PhantomData<T>,
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}
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impl<'lua, T: 'static + UserData> Default for StaticUserDataMethods<'lua, T> {
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fn default() -> StaticUserDataMethods<'lua, T> {
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StaticUserDataMethods {
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methods: HashMap::new(),
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meta_methods: HashMap::new(),
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_type: PhantomData,
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}
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}
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}
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impl<'lua, T: 'static + UserData> UserDataMethods<'lua, T> for StaticUserDataMethods<'lua, T> {
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fn add_method<A, R, M>(&mut self, name: &str, method: M)
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where
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A: FromLuaMulti<'lua>,
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R: ToLuaMulti<'lua>,
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M: 'static + Send + Fn(&'lua Lua, &T, A) -> Result<R>,
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{
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self.methods
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.insert(name.to_owned(), Self::box_method(method));
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}
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fn add_method_mut<A, R, M>(&mut self, name: &str, method: M)
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where
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A: FromLuaMulti<'lua>,
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R: ToLuaMulti<'lua>,
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M: 'static + Send + FnMut(&'lua Lua, &mut T, A) -> Result<R>,
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{
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self.methods
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.insert(name.to_owned(), Self::box_method_mut(method));
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}
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fn add_function<A, R, F>(&mut self, name: &str, function: F)
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where
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A: FromLuaMulti<'lua>,
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R: ToLuaMulti<'lua>,
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F: 'static + Send + Fn(&'lua Lua, A) -> Result<R>,
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{
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self.methods
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.insert(name.to_owned(), Self::box_function(function));
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}
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fn add_function_mut<A, R, F>(&mut self, name: &str, function: F)
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where
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A: FromLuaMulti<'lua>,
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R: ToLuaMulti<'lua>,
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F: 'static + Send + FnMut(&'lua Lua, A) -> Result<R>,
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{
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self.methods
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.insert(name.to_owned(), Self::box_function_mut(function));
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}
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fn add_meta_method<A, R, M>(&mut self, meta: MetaMethod, method: M)
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where
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A: FromLuaMulti<'lua>,
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R: ToLuaMulti<'lua>,
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M: 'static + Send + Fn(&'lua Lua, &T, A) -> Result<R>,
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{
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self.meta_methods.insert(meta, Self::box_method(method));
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}
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fn add_meta_method_mut<A, R, M>(&mut self, meta: MetaMethod, method: M)
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where
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A: FromLuaMulti<'lua>,
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R: ToLuaMulti<'lua>,
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M: 'static + Send + FnMut(&'lua Lua, &mut T, A) -> Result<R>,
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{
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self.meta_methods.insert(meta, Self::box_method_mut(method));
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}
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fn add_meta_function<A, R, F>(&mut self, meta: MetaMethod, function: F)
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where
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A: FromLuaMulti<'lua>,
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R: ToLuaMulti<'lua>,
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F: 'static + Send + Fn(&'lua Lua, A) -> Result<R>,
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{
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self.meta_methods.insert(meta, Self::box_function(function));
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}
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fn add_meta_function_mut<A, R, F>(&mut self, meta: MetaMethod, function: F)
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where
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A: FromLuaMulti<'lua>,
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R: ToLuaMulti<'lua>,
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F: 'static + Send + FnMut(&'lua Lua, A) -> Result<R>,
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{
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self.meta_methods
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.insert(meta, Self::box_function_mut(function));
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}
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}
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impl<'lua, T: 'static + UserData> StaticUserDataMethods<'lua, T> {
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fn box_method<A, R, M>(method: M) -> Callback<'lua, 'static>
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where
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A: FromLuaMulti<'lua>,
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R: ToLuaMulti<'lua>,
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M: 'static + Send + Fn(&'lua Lua, &T, A) -> Result<R>,
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{
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Box::new(move |lua, mut args| {
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if let Some(front) = args.pop_front() {
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let userdata = AnyUserData::from_lua(front, lua)?;
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let userdata = userdata.borrow::<T>()?;
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method(lua, &userdata, A::from_lua_multi(args, lua)?)?.to_lua_multi(lua)
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} else {
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Err(Error::FromLuaConversionError {
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from: "missing argument",
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to: "userdata",
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message: None,
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})
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}
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})
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}
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fn box_method_mut<A, R, M>(method: M) -> Callback<'lua, 'static>
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where
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A: FromLuaMulti<'lua>,
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R: ToLuaMulti<'lua>,
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M: 'static + Send + FnMut(&'lua Lua, &mut T, A) -> Result<R>,
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{
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let method = RefCell::new(method);
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Box::new(move |lua, mut args| {
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if let Some(front) = args.pop_front() {
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let userdata = AnyUserData::from_lua(front, lua)?;
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let mut userdata = userdata.borrow_mut::<T>()?;
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let mut method = method
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.try_borrow_mut()
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.map_err(|_| Error::RecursiveMutCallback)?;
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(&mut *method)(lua, &mut userdata, A::from_lua_multi(args, lua)?)?.to_lua_multi(lua)
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} else {
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Err(Error::FromLuaConversionError {
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from: "missing argument",
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to: "userdata",
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message: None,
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})
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}
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})
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}
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fn box_function<A, R, F>(function: F) -> Callback<'lua, 'static>
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where
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A: FromLuaMulti<'lua>,
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R: ToLuaMulti<'lua>,
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F: 'static + Send + Fn(&'lua Lua, A) -> Result<R>,
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{
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Box::new(move |lua, args| function(lua, A::from_lua_multi(args, lua)?)?.to_lua_multi(lua))
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}
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fn box_function_mut<A, R, F>(function: F) -> Callback<'lua, 'static>
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where
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A: FromLuaMulti<'lua>,
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R: ToLuaMulti<'lua>,
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F: 'static + Send + FnMut(&'lua Lua, A) -> Result<R>,
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{
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let function = RefCell::new(function);
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Box::new(move |lua, args| {
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let function = &mut *function
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.try_borrow_mut()
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.map_err(|_| Error::RecursiveMutCallback)?;
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function(lua, A::from_lua_multi(args, lua)?)?.to_lua_multi(lua)
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})
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}
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}
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502
src/methods.rs
502
src/methods.rs
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@ -1,502 +0,0 @@
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use std::cell::RefCell;
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use std::collections::HashMap;
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use std::marker::PhantomData;
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use std::string::String as StdString;
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use error::{Error, Result};
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use lua::Lua;
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use types::Callback;
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use userdata::{AnyUserData, UserData};
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use value::{FromLua, FromLuaMulti, MultiValue, ToLuaMulti};
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/// Kinds of metamethods that can be overridden.
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///
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/// Currently, this mechanism does not allow overriding the `__gc` metamethod, since there is
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/// generally no need to do so: [`UserData`] implementors can instead just implement `Drop`.
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///
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/// [`UserData`]: trait.UserData.html
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#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
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pub enum MetaMethod {
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/// The `+` operator.
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Add,
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/// The `-` operator.
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Sub,
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/// The `*` operator.
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Mul,
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/// The `/` operator.
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Div,
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/// The `%` operator.
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Mod,
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/// The `^` operator.
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Pow,
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/// The unary minus (`-`) operator.
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Unm,
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/// The floor division (//) operator.
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IDiv,
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/// The bitwise AND (&) operator.
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BAnd,
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/// The bitwise OR (|) operator.
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BOr,
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/// The bitwise XOR (binary ~) operator.
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BXor,
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/// The bitwise NOT (unary ~) operator.
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BNot,
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/// The bitwise left shift (<<) operator.
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Shl,
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/// The bitwise right shift (>>) operator.
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Shr,
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/// The string concatenation operator `..`.
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Concat,
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/// The length operator `#`.
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Len,
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/// The `==` operator.
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Eq,
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/// The `<` operator.
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Lt,
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/// The `<=` operator.
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Le,
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/// Index access `obj[key]`.
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Index,
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/// Index write access `obj[key] = value`.
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NewIndex,
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/// The call "operator" `obj(arg1, args2, ...)`.
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Call,
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/// The `__tostring` metamethod.
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///
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/// This is not an operator, but will be called by methods such as `tostring` and `print`.
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ToString,
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}
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pub(crate) fn meta_method_name(meta: MetaMethod) -> &'static str {
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match meta {
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MetaMethod::Add => "__add",
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MetaMethod::Sub => "__sub",
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MetaMethod::Mul => "__mul",
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MetaMethod::Div => "__div",
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MetaMethod::Mod => "__mod",
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MetaMethod::Pow => "__pow",
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MetaMethod::Unm => "__unm",
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MetaMethod::IDiv => "__idiv",
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MetaMethod::BAnd => "__band",
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MetaMethod::BOr => "__bor",
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MetaMethod::BXor => "__bxor",
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MetaMethod::BNot => "__bnot",
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MetaMethod::Shl => "__shl",
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MetaMethod::Shr => "__shr",
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MetaMethod::Concat => "__concat",
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MetaMethod::Len => "__len",
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MetaMethod::Eq => "__eq",
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MetaMethod::Lt => "__lt",
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MetaMethod::Le => "__le",
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MetaMethod::Index => "__index",
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MetaMethod::NewIndex => "__newindex",
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MetaMethod::Call => "__call",
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MetaMethod::ToString => "__tostring",
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}
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}
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/// Method registry for [`UserData`] implementors.
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///
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/// [`UserData`]: trait.UserData.html
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pub trait UserDataMethods<'lua, T: UserData> {
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/// Add a method which accepts a `&T` as the first parameter.
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///
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/// Regular methods are implemented by overriding the `__index` metamethod and returning the
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/// accessed method. This allows them to be used with the expected `userdata:method()` syntax.
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///
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/// If `add_meta_method` is used to set the `__index` metamethod, the `__index` metamethod will
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/// be used as a fall-back if no regular method is found.
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fn add_method<A, R, M>(&mut self, name: &str, method: M)
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where
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A: FromLuaMulti<'lua>,
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R: ToLuaMulti<'lua>,
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M: 'static + Send + Fn(&'lua Lua, &T, A) -> Result<R>;
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/// Add a regular method which accepts a `&mut T` as the first parameter.
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///
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/// Refer to [`add_method`] for more information about the implementation.
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///
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/// [`add_method`]: #method.add_method
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fn add_method_mut<A, R, M>(&mut self, name: &str, method: M)
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where
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A: FromLuaMulti<'lua>,
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R: ToLuaMulti<'lua>,
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M: 'static + Send + FnMut(&'lua Lua, &mut T, A) -> Result<R>;
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/// Add a regular method as a function which accepts generic arguments, the first argument will
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/// always be a `UserData` of type T.
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///
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/// Prefer to use [`add_method`] or [`add_method_mut`] as they are easier to use.
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///
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/// [`add_method`]: #method.add_method
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/// [`add_method_mut`]: #method.add_method_mut
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fn add_function<A, R, F>(&mut self, name: &str, function: F)
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where
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A: FromLuaMulti<'lua>,
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R: ToLuaMulti<'lua>,
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F: 'static + Send + Fn(&'lua Lua, A) -> Result<R>;
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/// Add a regular method as a mutable function which accepts generic arguments, the first
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/// argument will always be a `UserData` of type T.
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///
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/// This is a version of [`add_function`] that accepts a FnMut argument.
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///
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/// [`add_function`]: #method.add_function
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fn add_function_mut<A, R, F>(&mut self, name: &str, function: F)
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where
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A: FromLuaMulti<'lua>,
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R: ToLuaMulti<'lua>,
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F: 'static + Send + FnMut(&'lua Lua, A) -> Result<R>;
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/// Add a metamethod which accepts a `&T` as the first parameter.
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///
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/// # Note
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///
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/// This can cause an error with certain binary metamethods that can trigger if only the right
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/// side has a metatable. To prevent this, use [`add_meta_function`].
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///
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/// [`add_meta_function`]: #method.add_meta_function
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fn add_meta_method<A, R, M>(&mut self, meta: MetaMethod, method: M)
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where
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A: FromLuaMulti<'lua>,
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R: ToLuaMulti<'lua>,
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M: 'static + Send + Fn(&'lua Lua, &T, A) -> Result<R>;
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/// Add a metamethod as a function which accepts a `&mut T` as the first parameter.
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///
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/// # Note
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///
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/// This can cause an error with certain binary metamethods that can trigger if only the right
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/// side has a metatable. To prevent this, use [`add_meta_function`].
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///
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/// [`add_meta_function`]: #method.add_meta_function
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fn add_meta_method_mut<A, R, M>(&mut self, meta: MetaMethod, method: M)
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where
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A: FromLuaMulti<'lua>,
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R: ToLuaMulti<'lua>,
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M: 'static + Send + FnMut(&'lua Lua, &mut T, A) -> Result<R>;
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/// Add a metamethod which accepts generic arguments.
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///
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/// Metamethods for binary operators can be triggered if either the left or right argument to
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/// the binary operator has a metatable, so the first argument here is not necessarily a
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/// userdata of type `T`.
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fn add_meta_function<A, R, F>(&mut self, meta: MetaMethod, function: F)
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where
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A: FromLuaMulti<'lua>,
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R: ToLuaMulti<'lua>,
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F: 'static + Send + Fn(&'lua Lua, A) -> Result<R>;
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/// Add a metamethod as a mutable function which accepts generic arguments.
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///
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/// This is a version of [`add_meta_function`] that accepts a FnMut argument.
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///
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/// [`add_meta_function`]: #method.add_meta_function
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fn add_meta_function_mut<A, R, F>(&mut self, meta: MetaMethod, function: F)
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where
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A: FromLuaMulti<'lua>,
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R: ToLuaMulti<'lua>,
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F: 'static + Send + FnMut(&'lua Lua, A) -> Result<R>;
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}
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|
||||
pub(crate) struct StaticUserDataMethods<'lua, T: 'static + UserData> {
|
||||
pub(crate) methods: HashMap<StdString, Callback<'lua, 'static>>,
|
||||
pub(crate) meta_methods: HashMap<MetaMethod, Callback<'lua, 'static>>,
|
||||
pub(crate) _type: PhantomData<T>,
|
||||
}
|
||||
|
||||
impl<'lua, T: 'static + UserData> Default for StaticUserDataMethods<'lua, T> {
|
||||
fn default() -> StaticUserDataMethods<'lua, T> {
|
||||
StaticUserDataMethods {
|
||||
methods: HashMap::new(),
|
||||
meta_methods: HashMap::new(),
|
||||
_type: PhantomData,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl<'lua, T: 'static + UserData> UserDataMethods<'lua, T> for StaticUserDataMethods<'lua, T> {
|
||||
fn add_method<A, R, M>(&mut self, name: &str, method: M)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
M: 'static + Send + Fn(&'lua Lua, &T, A) -> Result<R>,
|
||||
{
|
||||
self.methods
|
||||
.insert(name.to_owned(), Self::box_method(method));
|
||||
}
|
||||
|
||||
fn add_method_mut<A, R, M>(&mut self, name: &str, method: M)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
M: 'static + Send + FnMut(&'lua Lua, &mut T, A) -> Result<R>,
|
||||
{
|
||||
self.methods
|
||||
.insert(name.to_owned(), Self::box_method_mut(method));
|
||||
}
|
||||
|
||||
fn add_function<A, R, F>(&mut self, name: &str, function: F)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
F: 'static + Send + Fn(&'lua Lua, A) -> Result<R>,
|
||||
{
|
||||
self.methods
|
||||
.insert(name.to_owned(), Self::box_function(function));
|
||||
}
|
||||
|
||||
fn add_function_mut<A, R, F>(&mut self, name: &str, function: F)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
F: 'static + Send + FnMut(&'lua Lua, A) -> Result<R>,
|
||||
{
|
||||
self.methods
|
||||
.insert(name.to_owned(), Self::box_function_mut(function));
|
||||
}
|
||||
|
||||
fn add_meta_method<A, R, M>(&mut self, meta: MetaMethod, method: M)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
M: 'static + Send + Fn(&'lua Lua, &T, A) -> Result<R>,
|
||||
{
|
||||
self.meta_methods.insert(meta, Self::box_method(method));
|
||||
}
|
||||
|
||||
fn add_meta_method_mut<A, R, M>(&mut self, meta: MetaMethod, method: M)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
M: 'static + Send + FnMut(&'lua Lua, &mut T, A) -> Result<R>,
|
||||
{
|
||||
self.meta_methods.insert(meta, Self::box_method_mut(method));
|
||||
}
|
||||
|
||||
fn add_meta_function<A, R, F>(&mut self, meta: MetaMethod, function: F)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
F: 'static + Send + Fn(&'lua Lua, A) -> Result<R>,
|
||||
{
|
||||
self.meta_methods.insert(meta, Self::box_function(function));
|
||||
}
|
||||
|
||||
fn add_meta_function_mut<A, R, F>(&mut self, meta: MetaMethod, function: F)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
F: 'static + Send + FnMut(&'lua Lua, A) -> Result<R>,
|
||||
{
|
||||
self.meta_methods
|
||||
.insert(meta, Self::box_function_mut(function));
|
||||
}
|
||||
}
|
||||
|
||||
impl<'lua, T: 'static + UserData> StaticUserDataMethods<'lua, T> {
|
||||
fn box_method<A, R, M>(method: M) -> Callback<'lua, 'static>
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
M: 'static + Send + Fn(&'lua Lua, &T, A) -> Result<R>,
|
||||
{
|
||||
Box::new(move |lua, mut args| {
|
||||
if let Some(front) = args.pop_front() {
|
||||
let userdata = AnyUserData::from_lua(front, lua)?;
|
||||
let userdata = userdata.borrow::<T>()?;
|
||||
method(lua, &userdata, A::from_lua_multi(args, lua)?)?.to_lua_multi(lua)
|
||||
} else {
|
||||
Err(Error::FromLuaConversionError {
|
||||
from: "missing argument",
|
||||
to: "userdata",
|
||||
message: None,
|
||||
})
|
||||
}
|
||||
})
|
||||
}
|
||||
|
||||
fn box_method_mut<A, R, M>(method: M) -> Callback<'lua, 'static>
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
M: 'static + Send + FnMut(&'lua Lua, &mut T, A) -> Result<R>,
|
||||
{
|
||||
let method = RefCell::new(method);
|
||||
Box::new(move |lua, mut args| {
|
||||
if let Some(front) = args.pop_front() {
|
||||
let userdata = AnyUserData::from_lua(front, lua)?;
|
||||
let mut userdata = userdata.borrow_mut::<T>()?;
|
||||
let mut method = method
|
||||
.try_borrow_mut()
|
||||
.map_err(|_| Error::RecursiveMutCallback)?;
|
||||
(&mut *method)(lua, &mut userdata, A::from_lua_multi(args, lua)?)?.to_lua_multi(lua)
|
||||
} else {
|
||||
Err(Error::FromLuaConversionError {
|
||||
from: "missing argument",
|
||||
to: "userdata",
|
||||
message: None,
|
||||
})
|
||||
}
|
||||
})
|
||||
}
|
||||
|
||||
fn box_function<A, R, F>(function: F) -> Callback<'lua, 'static>
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
F: 'static + Send + Fn(&'lua Lua, A) -> Result<R>,
|
||||
{
|
||||
Box::new(move |lua, args| function(lua, A::from_lua_multi(args, lua)?)?.to_lua_multi(lua))
|
||||
}
|
||||
|
||||
fn box_function_mut<A, R, F>(function: F) -> Callback<'lua, 'static>
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
F: 'static + Send + FnMut(&'lua Lua, A) -> Result<R>,
|
||||
{
|
||||
let function = RefCell::new(function);
|
||||
Box::new(move |lua, args| {
|
||||
let function = &mut *function
|
||||
.try_borrow_mut()
|
||||
.map_err(|_| Error::RecursiveMutCallback)?;
|
||||
function(lua, A::from_lua_multi(args, lua)?)?.to_lua_multi(lua)
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
pub(crate) enum NonStaticMethod<'lua, T> {
|
||||
Method(Box<Fn(&'lua Lua, &T, MultiValue<'lua>) -> Result<MultiValue<'lua>>>),
|
||||
MethodMut(Box<FnMut(&'lua Lua, &mut T, MultiValue<'lua>) -> Result<MultiValue<'lua>>>),
|
||||
Function(Box<Fn(&'lua Lua, MultiValue<'lua>) -> Result<MultiValue<'lua>>>),
|
||||
FunctionMut(Box<FnMut(&'lua Lua, MultiValue<'lua>) -> Result<MultiValue<'lua>>>),
|
||||
}
|
||||
|
||||
pub(crate) struct NonStaticUserDataMethods<'lua, T: UserData> {
|
||||
pub(crate) methods: HashMap<StdString, NonStaticMethod<'lua, T>>,
|
||||
pub(crate) meta_methods: HashMap<MetaMethod, NonStaticMethod<'lua, T>>,
|
||||
}
|
||||
|
||||
impl<'lua, T: UserData> Default for NonStaticUserDataMethods<'lua, T> {
|
||||
fn default() -> NonStaticUserDataMethods<'lua, T> {
|
||||
NonStaticUserDataMethods {
|
||||
methods: HashMap::new(),
|
||||
meta_methods: HashMap::new(),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl<'lua, T: UserData> UserDataMethods<'lua, T> for NonStaticUserDataMethods<'lua, T> {
|
||||
fn add_method<A, R, M>(&mut self, name: &str, method: M)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
M: 'static + Send + Fn(&'lua Lua, &T, A) -> Result<R>,
|
||||
{
|
||||
self.methods.insert(
|
||||
name.to_owned(),
|
||||
NonStaticMethod::Method(Box::new(move |lua, ud, args| {
|
||||
method(lua, ud, A::from_lua_multi(args, lua)?)?.to_lua_multi(lua)
|
||||
})),
|
||||
);
|
||||
}
|
||||
|
||||
fn add_method_mut<A, R, M>(&mut self, name: &str, mut method: M)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
M: 'static + Send + FnMut(&'lua Lua, &mut T, A) -> Result<R>,
|
||||
{
|
||||
self.methods.insert(
|
||||
name.to_owned(),
|
||||
NonStaticMethod::MethodMut(Box::new(move |lua, ud, args| {
|
||||
method(lua, ud, A::from_lua_multi(args, lua)?)?.to_lua_multi(lua)
|
||||
})),
|
||||
);
|
||||
}
|
||||
|
||||
fn add_function<A, R, F>(&mut self, name: &str, function: F)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
F: 'static + Send + Fn(&'lua Lua, A) -> Result<R>,
|
||||
{
|
||||
self.methods.insert(
|
||||
name.to_owned(),
|
||||
NonStaticMethod::Function(Box::new(move |lua, args| {
|
||||
function(lua, A::from_lua_multi(args, lua)?)?.to_lua_multi(lua)
|
||||
})),
|
||||
);
|
||||
}
|
||||
|
||||
fn add_function_mut<A, R, F>(&mut self, name: &str, mut function: F)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
F: 'static + Send + FnMut(&'lua Lua, A) -> Result<R>,
|
||||
{
|
||||
self.methods.insert(
|
||||
name.to_owned(),
|
||||
NonStaticMethod::FunctionMut(Box::new(move |lua, args| {
|
||||
function(lua, A::from_lua_multi(args, lua)?)?.to_lua_multi(lua)
|
||||
})),
|
||||
);
|
||||
}
|
||||
|
||||
fn add_meta_method<A, R, M>(&mut self, meta: MetaMethod, method: M)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
M: 'static + Send + Fn(&'lua Lua, &T, A) -> Result<R>,
|
||||
{
|
||||
self.meta_methods.insert(
|
||||
meta,
|
||||
NonStaticMethod::Method(Box::new(move |lua, ud, args| {
|
||||
method(lua, ud, A::from_lua_multi(args, lua)?)?.to_lua_multi(lua)
|
||||
})),
|
||||
);
|
||||
}
|
||||
|
||||
fn add_meta_method_mut<A, R, M>(&mut self, meta: MetaMethod, mut method: M)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
M: 'static + Send + FnMut(&'lua Lua, &mut T, A) -> Result<R>,
|
||||
{
|
||||
self.meta_methods.insert(
|
||||
meta,
|
||||
NonStaticMethod::MethodMut(Box::new(move |lua, ud, args| {
|
||||
method(lua, ud, A::from_lua_multi(args, lua)?)?.to_lua_multi(lua)
|
||||
})),
|
||||
);
|
||||
}
|
||||
|
||||
fn add_meta_function<A, R, F>(&mut self, meta: MetaMethod, function: F)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
F: 'static + Send + Fn(&'lua Lua, A) -> Result<R>,
|
||||
{
|
||||
self.meta_methods.insert(
|
||||
meta,
|
||||
NonStaticMethod::Function(Box::new(move |lua, args| {
|
||||
function(lua, A::from_lua_multi(args, lua)?)?.to_lua_multi(lua)
|
||||
})),
|
||||
);
|
||||
}
|
||||
|
||||
fn add_meta_function_mut<A, R, F>(&mut self, meta: MetaMethod, mut function: F)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
F: 'static + Send + FnMut(&'lua Lua, A) -> Result<R>,
|
||||
{
|
||||
self.meta_methods.insert(
|
||||
meta,
|
||||
NonStaticMethod::FunctionMut(Box::new(move |lua, args| {
|
||||
function(lua, A::from_lua_multi(args, lua)?)?.to_lua_multi(lua)
|
||||
})),
|
||||
);
|
||||
}
|
||||
}
|
||||
142
src/scope.rs
142
src/scope.rs
|
|
@ -1,17 +1,18 @@
|
|||
use std::any::Any;
|
||||
use std::cell::RefCell;
|
||||
use std::collections::HashMap;
|
||||
use std::marker::PhantomData;
|
||||
use std::mem;
|
||||
use std::os::raw::c_void;
|
||||
use std::rc::Rc;
|
||||
use std::string::String as StdString;
|
||||
|
||||
use error::{Error, Result};
|
||||
use ffi;
|
||||
use function::Function;
|
||||
use lua::Lua;
|
||||
use methods::{meta_method_name, NonStaticMethod, NonStaticUserDataMethods};
|
||||
use types::Callback;
|
||||
use userdata::{AnyUserData, UserData};
|
||||
use userdata::{AnyUserData, MetaMethod, UserData, UserDataMethods};
|
||||
use util::{
|
||||
assert_stack, init_userdata_metatable, protect_lua_closure, push_string, push_userdata,
|
||||
take_userdata, StackGuard,
|
||||
|
|
@ -245,7 +246,7 @@ impl<'scope> Scope<'scope> {
|
|||
})?;
|
||||
|
||||
for (k, m) in ud_methods.meta_methods {
|
||||
push_string(lua.state, meta_method_name(k))?;
|
||||
push_string(lua.state, k.name())?;
|
||||
lua.push_value(Value::Function(wrap_method(self, data.clone(), m)?));
|
||||
|
||||
protect_lua_closure(lua.state, 3, 1, |state| {
|
||||
|
|
@ -323,3 +324,138 @@ impl<'scope> Drop for Scope<'scope> {
|
|||
drop(to_drop);
|
||||
}
|
||||
}
|
||||
|
||||
enum NonStaticMethod<'lua, T> {
|
||||
Method(Box<Fn(&'lua Lua, &T, MultiValue<'lua>) -> Result<MultiValue<'lua>>>),
|
||||
MethodMut(Box<FnMut(&'lua Lua, &mut T, MultiValue<'lua>) -> Result<MultiValue<'lua>>>),
|
||||
Function(Box<Fn(&'lua Lua, MultiValue<'lua>) -> Result<MultiValue<'lua>>>),
|
||||
FunctionMut(Box<FnMut(&'lua Lua, MultiValue<'lua>) -> Result<MultiValue<'lua>>>),
|
||||
}
|
||||
|
||||
struct NonStaticUserDataMethods<'lua, T: UserData> {
|
||||
methods: HashMap<StdString, NonStaticMethod<'lua, T>>,
|
||||
meta_methods: HashMap<MetaMethod, NonStaticMethod<'lua, T>>,
|
||||
}
|
||||
|
||||
impl<'lua, T: UserData> Default for NonStaticUserDataMethods<'lua, T> {
|
||||
fn default() -> NonStaticUserDataMethods<'lua, T> {
|
||||
NonStaticUserDataMethods {
|
||||
methods: HashMap::new(),
|
||||
meta_methods: HashMap::new(),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl<'lua, T: UserData> UserDataMethods<'lua, T> for NonStaticUserDataMethods<'lua, T> {
|
||||
fn add_method<A, R, M>(&mut self, name: &str, method: M)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
M: 'static + Send + Fn(&'lua Lua, &T, A) -> Result<R>,
|
||||
{
|
||||
self.methods.insert(
|
||||
name.to_owned(),
|
||||
NonStaticMethod::Method(Box::new(move |lua, ud, args| {
|
||||
method(lua, ud, A::from_lua_multi(args, lua)?)?.to_lua_multi(lua)
|
||||
})),
|
||||
);
|
||||
}
|
||||
|
||||
fn add_method_mut<A, R, M>(&mut self, name: &str, mut method: M)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
M: 'static + Send + FnMut(&'lua Lua, &mut T, A) -> Result<R>,
|
||||
{
|
||||
self.methods.insert(
|
||||
name.to_owned(),
|
||||
NonStaticMethod::MethodMut(Box::new(move |lua, ud, args| {
|
||||
method(lua, ud, A::from_lua_multi(args, lua)?)?.to_lua_multi(lua)
|
||||
})),
|
||||
);
|
||||
}
|
||||
|
||||
fn add_function<A, R, F>(&mut self, name: &str, function: F)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
F: 'static + Send + Fn(&'lua Lua, A) -> Result<R>,
|
||||
{
|
||||
self.methods.insert(
|
||||
name.to_owned(),
|
||||
NonStaticMethod::Function(Box::new(move |lua, args| {
|
||||
function(lua, A::from_lua_multi(args, lua)?)?.to_lua_multi(lua)
|
||||
})),
|
||||
);
|
||||
}
|
||||
|
||||
fn add_function_mut<A, R, F>(&mut self, name: &str, mut function: F)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
F: 'static + Send + FnMut(&'lua Lua, A) -> Result<R>,
|
||||
{
|
||||
self.methods.insert(
|
||||
name.to_owned(),
|
||||
NonStaticMethod::FunctionMut(Box::new(move |lua, args| {
|
||||
function(lua, A::from_lua_multi(args, lua)?)?.to_lua_multi(lua)
|
||||
})),
|
||||
);
|
||||
}
|
||||
|
||||
fn add_meta_method<A, R, M>(&mut self, meta: MetaMethod, method: M)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
M: 'static + Send + Fn(&'lua Lua, &T, A) -> Result<R>,
|
||||
{
|
||||
self.meta_methods.insert(
|
||||
meta,
|
||||
NonStaticMethod::Method(Box::new(move |lua, ud, args| {
|
||||
method(lua, ud, A::from_lua_multi(args, lua)?)?.to_lua_multi(lua)
|
||||
})),
|
||||
);
|
||||
}
|
||||
|
||||
fn add_meta_method_mut<A, R, M>(&mut self, meta: MetaMethod, mut method: M)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
M: 'static + Send + FnMut(&'lua Lua, &mut T, A) -> Result<R>,
|
||||
{
|
||||
self.meta_methods.insert(
|
||||
meta,
|
||||
NonStaticMethod::MethodMut(Box::new(move |lua, ud, args| {
|
||||
method(lua, ud, A::from_lua_multi(args, lua)?)?.to_lua_multi(lua)
|
||||
})),
|
||||
);
|
||||
}
|
||||
|
||||
fn add_meta_function<A, R, F>(&mut self, meta: MetaMethod, function: F)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
F: 'static + Send + Fn(&'lua Lua, A) -> Result<R>,
|
||||
{
|
||||
self.meta_methods.insert(
|
||||
meta,
|
||||
NonStaticMethod::Function(Box::new(move |lua, args| {
|
||||
function(lua, A::from_lua_multi(args, lua)?)?.to_lua_multi(lua)
|
||||
})),
|
||||
);
|
||||
}
|
||||
|
||||
fn add_meta_function_mut<A, R, F>(&mut self, meta: MetaMethod, mut function: F)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
F: 'static + Send + FnMut(&'lua Lua, A) -> Result<R>,
|
||||
{
|
||||
self.meta_methods.insert(
|
||||
meta,
|
||||
NonStaticMethod::FunctionMut(Box::new(move |lua, args| {
|
||||
function(lua, A::from_lua_multi(args, lua)?)?.to_lua_multi(lua)
|
||||
})),
|
||||
);
|
||||
}
|
||||
}
|
||||
|
|
|
|||
196
src/userdata.rs
196
src/userdata.rs
|
|
@ -2,10 +2,202 @@ use std::cell::{Ref, RefCell, RefMut};
|
|||
|
||||
use error::{Error, Result};
|
||||
use ffi;
|
||||
use methods::UserDataMethods;
|
||||
use lua::Lua;
|
||||
use types::LuaRef;
|
||||
use util::{assert_stack, get_userdata, StackGuard};
|
||||
use value::{FromLua, ToLua};
|
||||
use value::{FromLua, FromLuaMulti, ToLua, ToLuaMulti};
|
||||
|
||||
/// Kinds of metamethods that can be overridden.
|
||||
///
|
||||
/// Currently, this mechanism does not allow overriding the `__gc` metamethod, since there is
|
||||
/// generally no need to do so: [`UserData`] implementors can instead just implement `Drop`.
|
||||
///
|
||||
/// [`UserData`]: trait.UserData.html
|
||||
#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
|
||||
pub enum MetaMethod {
|
||||
/// The `+` operator.
|
||||
Add,
|
||||
/// The `-` operator.
|
||||
Sub,
|
||||
/// The `*` operator.
|
||||
Mul,
|
||||
/// The `/` operator.
|
||||
Div,
|
||||
/// The `%` operator.
|
||||
Mod,
|
||||
/// The `^` operator.
|
||||
Pow,
|
||||
/// The unary minus (`-`) operator.
|
||||
Unm,
|
||||
/// The floor division (//) operator.
|
||||
IDiv,
|
||||
/// The bitwise AND (&) operator.
|
||||
BAnd,
|
||||
/// The bitwise OR (|) operator.
|
||||
BOr,
|
||||
/// The bitwise XOR (binary ~) operator.
|
||||
BXor,
|
||||
/// The bitwise NOT (unary ~) operator.
|
||||
BNot,
|
||||
/// The bitwise left shift (<<) operator.
|
||||
Shl,
|
||||
/// The bitwise right shift (>>) operator.
|
||||
Shr,
|
||||
/// The string concatenation operator `..`.
|
||||
Concat,
|
||||
/// The length operator `#`.
|
||||
Len,
|
||||
/// The `==` operator.
|
||||
Eq,
|
||||
/// The `<` operator.
|
||||
Lt,
|
||||
/// The `<=` operator.
|
||||
Le,
|
||||
/// Index access `obj[key]`.
|
||||
Index,
|
||||
/// Index write access `obj[key] = value`.
|
||||
NewIndex,
|
||||
/// The call "operator" `obj(arg1, args2, ...)`.
|
||||
Call,
|
||||
/// The `__tostring` metamethod.
|
||||
///
|
||||
/// This is not an operator, but will be called by methods such as `tostring` and `print`.
|
||||
ToString,
|
||||
}
|
||||
|
||||
impl MetaMethod {
|
||||
pub(crate) fn name(self) -> &'static str {
|
||||
match self {
|
||||
MetaMethod::Add => "__add",
|
||||
MetaMethod::Sub => "__sub",
|
||||
MetaMethod::Mul => "__mul",
|
||||
MetaMethod::Div => "__div",
|
||||
MetaMethod::Mod => "__mod",
|
||||
MetaMethod::Pow => "__pow",
|
||||
MetaMethod::Unm => "__unm",
|
||||
MetaMethod::IDiv => "__idiv",
|
||||
MetaMethod::BAnd => "__band",
|
||||
MetaMethod::BOr => "__bor",
|
||||
MetaMethod::BXor => "__bxor",
|
||||
MetaMethod::BNot => "__bnot",
|
||||
MetaMethod::Shl => "__shl",
|
||||
MetaMethod::Shr => "__shr",
|
||||
MetaMethod::Concat => "__concat",
|
||||
MetaMethod::Len => "__len",
|
||||
MetaMethod::Eq => "__eq",
|
||||
MetaMethod::Lt => "__lt",
|
||||
MetaMethod::Le => "__le",
|
||||
MetaMethod::Index => "__index",
|
||||
MetaMethod::NewIndex => "__newindex",
|
||||
MetaMethod::Call => "__call",
|
||||
MetaMethod::ToString => "__tostring",
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// Method registry for [`UserData`] implementors.
|
||||
///
|
||||
/// [`UserData`]: trait.UserData.html
|
||||
pub trait UserDataMethods<'lua, T: UserData> {
|
||||
/// Add a method which accepts a `&T` as the first parameter.
|
||||
///
|
||||
/// Regular methods are implemented by overriding the `__index` metamethod and returning the
|
||||
/// accessed method. This allows them to be used with the expected `userdata:method()` syntax.
|
||||
///
|
||||
/// If `add_meta_method` is used to set the `__index` metamethod, the `__index` metamethod will
|
||||
/// be used as a fall-back if no regular method is found.
|
||||
fn add_method<A, R, M>(&mut self, name: &str, method: M)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
M: 'static + Send + Fn(&'lua Lua, &T, A) -> Result<R>;
|
||||
|
||||
/// Add a regular method which accepts a `&mut T` as the first parameter.
|
||||
///
|
||||
/// Refer to [`add_method`] for more information about the implementation.
|
||||
///
|
||||
/// [`add_method`]: #method.add_method
|
||||
fn add_method_mut<A, R, M>(&mut self, name: &str, method: M)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
M: 'static + Send + FnMut(&'lua Lua, &mut T, A) -> Result<R>;
|
||||
|
||||
/// Add a regular method as a function which accepts generic arguments, the first argument will
|
||||
/// always be a `UserData` of type T.
|
||||
///
|
||||
/// Prefer to use [`add_method`] or [`add_method_mut`] as they are easier to use.
|
||||
///
|
||||
/// [`add_method`]: #method.add_method
|
||||
/// [`add_method_mut`]: #method.add_method_mut
|
||||
fn add_function<A, R, F>(&mut self, name: &str, function: F)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
F: 'static + Send + Fn(&'lua Lua, A) -> Result<R>;
|
||||
|
||||
/// Add a regular method as a mutable function which accepts generic arguments, the first
|
||||
/// argument will always be a `UserData` of type T.
|
||||
///
|
||||
/// This is a version of [`add_function`] that accepts a FnMut argument.
|
||||
///
|
||||
/// [`add_function`]: #method.add_function
|
||||
fn add_function_mut<A, R, F>(&mut self, name: &str, function: F)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
F: 'static + Send + FnMut(&'lua Lua, A) -> Result<R>;
|
||||
|
||||
/// Add a metamethod which accepts a `&T` as the first parameter.
|
||||
///
|
||||
/// # Note
|
||||
///
|
||||
/// This can cause an error with certain binary metamethods that can trigger if only the right
|
||||
/// side has a metatable. To prevent this, use [`add_meta_function`].
|
||||
///
|
||||
/// [`add_meta_function`]: #method.add_meta_function
|
||||
fn add_meta_method<A, R, M>(&mut self, meta: MetaMethod, method: M)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
M: 'static + Send + Fn(&'lua Lua, &T, A) -> Result<R>;
|
||||
|
||||
/// Add a metamethod as a function which accepts a `&mut T` as the first parameter.
|
||||
///
|
||||
/// # Note
|
||||
///
|
||||
/// This can cause an error with certain binary metamethods that can trigger if only the right
|
||||
/// side has a metatable. To prevent this, use [`add_meta_function`].
|
||||
///
|
||||
/// [`add_meta_function`]: #method.add_meta_function
|
||||
fn add_meta_method_mut<A, R, M>(&mut self, meta: MetaMethod, method: M)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
M: 'static + Send + FnMut(&'lua Lua, &mut T, A) -> Result<R>;
|
||||
|
||||
/// Add a metamethod which accepts generic arguments.
|
||||
///
|
||||
/// Metamethods for binary operators can be triggered if either the left or right argument to
|
||||
/// the binary operator has a metatable, so the first argument here is not necessarily a
|
||||
/// userdata of type `T`.
|
||||
fn add_meta_function<A, R, F>(&mut self, meta: MetaMethod, function: F)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
F: 'static + Send + Fn(&'lua Lua, A) -> Result<R>;
|
||||
|
||||
/// Add a metamethod as a mutable function which accepts generic arguments.
|
||||
///
|
||||
/// This is a version of [`add_meta_function`] that accepts a FnMut argument.
|
||||
///
|
||||
/// [`add_meta_function`]: #method.add_meta_function
|
||||
fn add_meta_function_mut<A, R, F>(&mut self, meta: MetaMethod, function: F)
|
||||
where
|
||||
A: FromLuaMulti<'lua>,
|
||||
R: ToLuaMulti<'lua>,
|
||||
F: 'static + Send + FnMut(&'lua Lua, A) -> Result<R>;
|
||||
}
|
||||
|
||||
/// Trait for custom userdata types.
|
||||
///
|
||||
|
|
|
|||
Loading…
Reference in New Issue